Answer:
The top looks like a trapezoid and so does the bottom so it's a prism.
lets find the area of the base!
15(base 1) + 7(base2) = 22
22 x 5(height) = 110
110 divided by 2( x 1/2) = 55
Now we multiply by the actual height of the TOTAL prism which is 11.
55 x 11 = 605 cubic feet, is your answer.
Formula for AREA of a trapezoid:
B1(base 1) + B2(base 2) x H(height) x 1/2 (basically just dividing by 2)